An elephant sprays earth in the Tsavo East National Park, 280 km (173 miles) east of Kenya's capital Nairobi February 10, 2011. A census of elephants in the Tsavo-Mkomazi conservation area is ongoing as drought and poaching are putting pressure on the large animals, it remains to be seen whether the population is expanding or contracting. (REUTERS/Noor Khamis)

An elephant sprays earth in the Tsavo East National Park, 280 km (173 miles) east of Kenya's capital Nairobi February 10, 2011. A census of elephants in the Tsavo-Mkomazi conservation area is ongoing as drought and poaching are putting pressure on the large animals, it remains to be seen whether the population is expanding or contracting. (REUTERS/Noor Khamis)